How to grow one without nameless venom: you use snow owl. Every time the rock drake gets low, just heal it with the snow owl. And if the torpor because of starvation gets too high, then feed it stimulants. 👍 good luck with your drake
People keep asking why they're not on Valguero. They were on Valguero back when it was a mod map. When the devs made Valguero an official map, they removed rock drakes and reapers from it because they don't want people to have Aberration content without buying the dlc itself. There was a quarrel with the devs and the original creators of Valguero, because the devs removed so many creatures from it. Eventually we got where we are. Valguero got a lot of creatures removed from it, and the original creators released a mod for Valguero that adds a bunch of creatures to it, rock drakes included.